Frictional reversing-gear.



- zen of the United States, residing at Lynn, in

a when thrown in mesh with the driving and same.

signed as an improvement on my United States UN I-TED STATES Patented April 26, 1904.

PAT NT OFFI E.

FRICTICNAL REVERSlNG-GEAR.

SPECIFICATION forming part of Letters Patent No. 758,494, dated April 26, 1904. Application filed May 19, 1903. Serial no. 157,845. (No model.)

Teal/ whom, it 77204/6070067'70.

Be it known that I, ALFRED ADAMSON, a citithe county of Essex'and State of- Massachusetts, have invented certain new and useful Improvements in Frictional Reversing-Gears; and I do hereby declare the following to be a full, clear,'and exact description of the invention, such as will enable others'skilled in the artto which it appertains to n1 he and use the My invention'relates to improvements in frictional reversing-gearing, and is especially applicable for-use with motor-vehicles or the like, although it is obvious that it may be used in various other connections. l I

Briefly stated, my invention comprises a'pair driving'mechanism of the motor and the driven verse the direction of. rotation of said driven The present. invention is particularly de- Letters Patent No. 673,071, granted April 30, 1901." In that patent the-intermediate gearwheels are mounted on an arm or yoke pivotaily supported on a longitudinal axis so that driven wheels they assume a plane angular to thedriving and-driven wheels; but in the present instance the gear wheels are rotatably shifted in a strictly vertical plane, and hence engage the driving-wheels in the same plane of rotation a manifest advantage.

Other objects and advantages will appear in the following specification, and to more fully describe my invention reference is had to the l accompanying drawings, in which like letters designate corresponding parts, and in which-- l Figure 1 is a side elevation of my improved rcversing gearing, the (.lrivingav-algeel A being omitted; andliig. Qis a plan of same, both driving-wheels being shown.

A A designate a pair of driving-wheels rigidly mountedpn the power-shaft a of the motor or engine; Band C, the gear-wheels mounted on the shafts b and 0, respectively, and 1) a gear-wheel mounted on the shaft 1) and A.

alongside the wheel B and adapted to mesh with the gear-wheel (3.. These wheels, as clearly shown in Fig. 2,. are circumferentially grooved, so as to formbeveled ribs alternating with V-shaped'grooves, the beveled ribs of one wheel entering the V -shaped grooves on its adjacent wheel'when in engagement, thereby obtaining greatest possible surfaee contact between the wheels in a vertical plane.

Pivotally supported-centrally on the pivotrod E, on each side of the gear-wheels, are the upright arms F, provided at' their upper ends with the rectangular slotted heads ('ir (i and at their lower ends with the journal-bearings H.

The pivot-rod E a s clearly shown, is supported in a suitablebearingou frame l, which in turn is adapted to rest on the angle-irons supporting the engine or motor or otherwise, as may be desired.

In thejournal-bearings H, at the lower ends of the arms F. is suspended the shaft 0 of'the large gear-wheel (J, and mounted in the slotted heads (i and Hr, at the upper ends of the arms F, are located the journal guide-blocks 7), adjustable longitudinally therein by the set-screws 7 g and the nuts ff". In these journal guide-blocks is mounted the shaft 7:. carrying the gear-whecls-B and l).

Suitably mounted on the lower shaft v is a sprocket-wheel J, andin actual operation this sprocket-wheel is geared by a sprocket-chain with a similar. sprocket-wheel on the. driveu' axle of the motor-vehicle or the like. or any The arrangement of the various wheels is such relatively to each other, as clearly shown in Fig. 2, that the gear-wheels B and may alternately be thrown in'and out of engage meut with their respective driving-whdtds The small gear-wheel l), beingrlisposed alongside thelarge gear-wheel B. rests on the gear-wheel C and is held in adjusta jle engagement thegewi'th by the'arms haudtlw adjusting means above referred to.

K is a substantially U-shaped yokeor member secured in any suitable manner lo'the arms F. In the drawings 1 have ilh'isti-ated this yokem'emberasbeing secrufedai its free with driving 2111-- ends, as by. the bolts it, to the slotted heads G G of the arms F. Connected to said yoke at its upper end is arod L or other suitable connection for operating the gear-wheels on their common pivotal axis E into and out of engagement with the drivingqvheels in alongitudinal vertical plane. This rod or connection at its free end may be pivotally connected to a' handle (not shown) in easy reach ofthe operator. 7

Assuming the parts to be in the position shown in Fig. 1, the driving-wheels A A rotating to the right, as indicated by the arrow,

the upper gear-wheel B being in mesh and the lower gear-wheel C out of mesh with their respective driving-wheels, then the driving wheel A rotates the gear-wheel B, together with the gear-wheel D, to the left, the latter meshing with the gear-wheel C, rotating it to the right or in the samedirection'as' the driving-wheel. Upon a backward pull on the rod L the upper gear-wheel B is thrown out of mesh with its driving-wheel A and the lower gearwhcel C is thrown in mesh with its drivingwl me] A. The gear-wheel C being then directly geared to its driving-wheel is rotated in an opposite direction to the direction vof rotation when operated through the intermediate gears B and .1), and hence the direction of rotation of the sprockctwheel J is reversed,'and correspondingly the driven shaft or axle ofith vehicle. I

It is obvious that if it is desired to throw and hold both of the reversing gear-wheels out of engagement with the driving-wheel,

so that the engine or motor may-be allowed to run without operating the other mechanism, it is only necessary that the arms F be rotated on their axis a limited distance that i s to say, sufficiently so to throw one reversi rig-gear just out and the other one not quite into engagement with the driving-Wheel.

l lo not wish vto limit myself to the exact,

details of construction as herein described, as it is obvious that manyniodifications might be made without departing from the spirit of my invention; but

\Vhat I claim, and desire to secure by Lett rs Patent ofvthe United States, is-- 1. ln reversing-gearing, the combination with driving means, of a pair of reversing ;ear \vl|ecls and means so connecting same as to rotate one of said WlHP-GlSby, and in the opg pnsite direciion to the direction of rotation. ot, ,1

neously throwing one of said wheels into anu the other out of engagement with the driving means.

3. .In reversinggearing, the combination with a pair of driving-wheels, of a pair of re' versing gear-Wheels, a pinion carried by one of sa1d reversmg.gears and meshing with the other for rotating said geared wheels in opposite directions, and means'for simultaneously throwing one of said geared wheels into and the other out of engagement with their respec tive driving-wheels.

4. In reversing-gearing, the combination with'driving means, of a pair of reversing gear-wheels, conjointly movable in parallel planes adjacent said driving means, apinion carried by one of said reversing-gears and meshing withthe other'for rotating said geared wheels in opposite directions, andmean's for throwing one of said geared wheels into and the other out of engagement'with the driving means.

5. In reversing-gearing, the combination with the, pair of dri' ing-wheels, of a pair of reversing gear-wheq s, con ointly movable in parallel planes, a pinion carried by one of said reversing-gears and meshing with the other for rotating said geared wheelsin'o'pposite directions, and means for simultaneously throwing one of said geared wheels into and the other out of engagement with their respective driving-wheels. f

6. In reversing-gearing, the combination with the driving means, of a pairof reversing gear-wheels, a pinion carried by one of said reversing-gears and meshing with 'the other for rotating said geared wheels'in opposite'directions, and means for simultaneously'throw ing oneof said wheels into andthe other out Q of engagement with the driving means, comprising an arm connecting the respective shafts of said wheels, for holding said wheels always ,in gear, and means for operating said arm.

7 In reversing-gearing, the combination with the driving means, of a pair of reversing gear' wheels, conjointly movable in parallel planes, a pinion carried one of said rovers ing-gears and meshing with the other for rotating said geared wheels in opposite directions, and means for simultaneously throwing one of said wheels'into'and the other out of engagement with the driving means, comprising an arm connecting the respective shafts of said wheels, for holding said wheels always in gear, and means for o mrating said arm.

8. in reversing-gearing, the combination with the driving means, of a pair of geared wheels con jointly movable in parallel planes, and means for simultaneously throwing one of said wheels into and the other out of engage- .ment with said driving means, comprising an arm and cooperating means adjustably connecting the respective shafts of said wheels, for holding said wheels always in gear, and means for operating said arm;

and gearing" therebetween adapted to rotatesaid gear-wheels in op lposite directions, and means for simultaneous y throwing one of said gear-wheels into and the other out of engagenient with the driving means, comprising an arm connecting-- the respective shafts of said gear-wheels, for holding said wheels always in gear and con jointly movable in parallel planes,

' and means for operating said arm'.

10. In reversi nggearing, the combination with the driving means, of apair of reversing gear-wheels, a pinion carried by one of posite directions, a pair of pivoted arms con said 'reversing-gears-and' meshing with the other for rotating said geared wheels in opnecting the respective shafts of said wheels forsupporting and holding said wheels geared,

and means for'rotating said pair of arms on with the driving means, of a centrally-pivoted arm adjacent thereto, a pair of reversing geartheir axis for simultaneously throwing one of said wheels into and the other out of engagementwith the driving means. i

11. In reversing-gearing, the combination with a pair of driving-wheels, of a pair of gear-wheels and .gearing therebetween adapted to rotate said gear-wheels in opposite directions, a p'air of pivoted arms connecting the respective shafts of said gear-wheels for supporting and holding said wheels geared,

and means for rotating said pair-of arms on their axis for simultaneously throwing one of said gear-wheels into and "the other out of eng gement with their respective drivingwheels.

12. In reversing-gearing, the combination with the driving means,-of. a pair ofreversing gearrwheels, a pinion carried by. one of said reversing-wheels and meshingwith the Witnesses:

other for rotating said geared wheels in opposite dire'ctionsfand means for simultaneously throwing one of said geared wheels toward and the other away from the driving means a limited distance for holding both of said geared reversing-wheels out of engage mentwith the driving means.

13. .In reversing-gearing, the combination with tliedriving means, of a pair of reversing gear-wheels coniointly movable'in parallel planes, a pinion carried by one of said reversing-gears' and meshing with the other for v rotating said geared wheels in oppdsite di'rec tions, and means for s'imiiltaneously throwing 'one of said geared wheels toward and the other away from the drivingmeans a limited distance, for holding-botliof said reversingwheels out of.engagement with the driving means. I

14. In reverslng gearmg, the combination wheels mounted in therespective ends of said arm, gearing directly connecting, said reversing gear-wheels adapted to rotate-said gearwheels in oppositedirections and means for reversing gear-wheels out of engagement with said driving means.

In testimonywhereof I afiix my signature 1n presence of two witnesses.

' ALFRED n'AMsoN.

FRED L. NoRnIs, J nRoMn INGALLS. 

